So, there's nothing interesting on the other side of the river? The whole point was just to get easier access to the opposite shore, and that's all there was to it. Now that they ranked up, they want to see something else than just the river. It's pretty disappointing that their "adventure" is to go to a thoroughly known place where everybody else goes as well. They aren't really adventurers, they are just monster hunters. It would have been cool if they had, instead, went to explore a poorly known wilderness on the other side of the river.